Effect of Seashell Nanoparticles and Gluma Desensitizer on Sensitivity of Teeth

Effect of Seashell Nanoparticles and Gluma Desensitizer on Sensitivity of Teeth Prepared for Intra Coronal Restorations as Well as Micromorphology of The Treated Dentin Surfaces

Tooth hypersensitivity is characterized by a transient short and sharp pain originating from exposed dentin in response to thermal, dehydrating, tactile, osmotic, and chemical stimuli. Tooth sensitivity after cementation of complete coverage crowns, is a rather common event since much of the protecting enamel is removed during preparation and a large area of dentin is exposed.

Dentin contains up to two million tubules per cm2, which corresponds approximately to the surface area of most crown preparations. It is well known that such dentin wounds respond to mechanical, osmotic, or thermal stimulation with pain. This phenomenon is commonly example by the hydrodynamic theory of Brannstrom.

Study Overview

• Status: Completed
• Conditions: Teeth Sensitivity; Treated Dentin Surfaces
• Intervention / Treatment: Procedure: Seashell Nanoparticles and Gluma Desensitizer

Detailed Description

The extent and duration of post cementation hypersensitivity has been related to number of factors, mainly associated with preparation trauma. However, research reports confirm potential effects of luting agents used and leakage of bacteria and bacterial products from the oral cavity along the margins of restorations, especially as a response to poorly fitting temporary restorations. Apparently, a relationship exists between the time interval during which the temporary restoration is in place and post cementation sensitivity.

Gluma Desensitizer is a combination of glutaraldehyde and HEMA (Hydroxy Ethyl Methacrylate). Glutaraldehyde causes amino acids and proteins to coagulate in dentinal tubules and is an effective disinfectant. HEMA can be effective in sealing of dentinal tubules.

Gluma does not interfere with dentin bonding systems but its glutaraldehyde component can damage the gingiva after long term exposure. HEMA can cause contact dermatitis and it can actually perforate latex gloves and must be used with caution, hence, the use of rubber dam is advised in such cases .

HEMA is soluble in water allowing it to penetrate deep into dentinal tubules however, the effect is reversible and HEMA gradually loses its effect allowing the dentinal tubules to again became exposed.

Hydroxyapatite powder is one such material that exhibits excellent bioactive properties and striking similarities to dental hard tissues can be achieved from two different sources. Synthetic and natural (biologic) hydroxyapatite.HAP can be produced from Coral Seashells, eggshells and also from body fluids.

Recently, the use of waste materials to synthesize HAP has received great response from many researchers across the world. This idea gives an innovation to produce a new valuable product from the waste materials such as seashell.Seashell consists of high source of calcium that can act as calcium precursor. Some researcher found that the content of calcium carbonate (CaCO3) in seashell is approximately between 98 and 99 %.

The word seashell is often used to mean only the shell of a marine mollusk. Using seashell as source of calcium carbonate (CaCO3) to produce calcite nanoparticle is meaningful for both environmental protection and biomedical application. Seashell is with the natural ceramic structure are similar to human bone and tooth structure.

The conversation of macroparticles into nanoparticles resulted in larger surface area increasing the reactivity of nanoparticles and hence, it's efficacy. Nanoparticles have widespread use due to their superior properties and are being investigated extensively in recent years due to their advantages.Nano -sized materials can enter dentinal tubules of 2 -3 µm in diameter, easily occluding the dentinal tubules

• Study Type: Interventional
• Enrollment (Actual): 33
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Egypt
  • Cairo, Egypt
    • Al-Azhar University Hospitals

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• For patient Age between 25 and 40 years and no gender reference.
• For the teeth Absence of pulpal exposure, RCT treatments, fracture and free of extensive caries (The amount of caries that can be removed during the preparation is acceptable

Exclusion Criteria:

• -For patients Use of desensitizing substances or drug like antihistamines, antidepressant 6 weeks before or during the study.

Requiring antibiotic prophylaxes or cortico-steriod therapy.

-For teeth Tooth hypersensitivity prior to tooth preparation (like, abrasion or attration).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: Group A (Control Group); About 11 patients with hypersensitive teeth of no treatment materials used	Procedure: Seashell Nanoparticles and Gluma Desensitizer; Evaluation the effect of Seashell Nano Particles and Gluma desensitizer on sensitivity of the teeth for Intra coronal restoration at different times; Other Names: Micromorphology
Active Comparator: Group B(Seashell Nanoparticles Group); About 11 patients with hypersensitive teeth faced treatment by sea shell nanoparticles	Procedure: Seashell Nanoparticles and Gluma Desensitizer; Evaluation the effect of Seashell Nano Particles and Gluma desensitizer on sensitivity of the teeth for Intra coronal restoration at different times; Other Names: Micromorphology
Active Comparator: Group C (Gluma Group); About 11 patients with hypersensitive teeth faced treatment by Gluma	Procedure: Seashell Nanoparticles and Gluma Desensitizer; Evaluation the effect of Seashell Nano Particles and Gluma desensitizer on sensitivity of the teeth for Intra coronal restoration at different times; Other Names: Micromorphology

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Desnsetizing agent Hypersensitivity	Evaluation of the treated patients from hypersensitivity of the application of desnsetizing agent ( gluma and nanasaesheall) by using VAS score (from 0 to 10) as 0 is mean no sensitivity while 10 is the worst.	from 0 hours to two weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Dentinal tubule occlusion	Ability of the materials to induce dentinal tubule occlusion using SEM	from 0 hours to two weeks

Collaborators and Investigators

• Sponsor: Faculty of Dental Medicine for Girls
• Collaborators: Al-Azhar University
• Investigators: Study Chair: Osama Saleh Abd El Ghani, Professor, Al-Azhar Faculty of Dental Medicine for girls

Study record dates

Study Major Dates

• Study Start (Actual): January 10, 2023
• Primary Completion (Actual): October 5, 2023
• Study Completion (Actual): October 10, 2023

Study Registration Dates

• First Submitted: September 28, 2024
• First Submitted That Met QC Criteria: September 28, 2024
• First Posted (Actual): October 1, 2024

Study Record Updates

• Last Update Posted (Actual): October 1, 2024
• Last Update Submitted That Met QC Criteria: September 28, 2024
• Last Verified: January 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Immune System Diseases; Stomatognathic Diseases; Tooth Diseases; Hypersensitivity; Dentin Sensitivity
• Other Study ID Numbers: Hoda El Gendy

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No